Apportionment and limits on recovery

Causation Before Collection: Sorting Divisible Harm From Shared Liability

When multiple actors legally cause one injury, the central allocation question is whether the harm can be separated and whether the governing law lets the claimant collect beyond each actor’s assigned share. Joint and several liability permits recovery of the entire judgment from any tortfeasor jointly liable for an indivisible injury, subject to the claimant’s total recovery limit. Several-only liability limits each defendant’s payment to that defendant’s assigned percentage or causal portion.

Start with causation, not collection. A defendant must have caused legally cognizable harm; merely participating in the events or being negligent in the abstract is insufficient. If distinct injuries or expenses can be matched to particular actors, the harm is divisible, and each actor ordinarily pays the portion caused by that actor. If the injury is one unit that cannot reliably be divided-such as one spinal injury caused concurrently by two negligent drivers-then the injury is indivisible.

For an indivisible injury, determine whether the jurisdiction’s rule is joint and several or several only. Under joint and several liability, the claimant may collect the whole permitted judgment from one jointly liable defendant, even if that defendant’s comparative share is smaller. The claimant cannot obtain double recovery. A defendant who pays more than that defendant’s fair share ordinarily seeks contribution from the other tortfeasors. Contribution divides the burden among wrongdoers; it does not reduce the claimant’s collection right in a joint-and-several jurisdiction.

Do not confuse contribution with indemnity. Contribution asks each tortfeasor to bear a proportionate share. Indemnity shifts the entire loss to another responsible party, usually where one party’s liability is derivative or secondary rather than based on that party’s own active wrongdoing.

Recognition triggers include multiple defendants causing one event, a jury assigning percentages, an insolvent tortfeasor, a defendant arguing “I should pay only my percentage,” or a defendant seeking contribution after paying the judgment. A supplied statute may alter the common-law result, so its verbs-“jointly,” “severally,” “only,” or “contribution”-matter.

This topic is not starred: legal resources may be supplied when it is tested, and where they are not, you need only "demonstrate recognition that the topic is at issue."

The Working Floor: What Must Be Available Before the Rule Arrives

You are not required to hold this topic cold because legal resources may be supplied. The floor you must hold in memory is the vocabulary and sequence: identify each actor who caused harm; classify the harm as divisible or indivisible; determine whether the supplied law uses joint and several or several-only liability; calculate each assigned share; then test mitigation, attorney-fee treatment, and any statutory cap.

That floor is understanding that must be available quickly, not a list of exact provisions. You need not hold exact element wording, exception lists, dollar amounts, or numbered subsections. Those are the contents to retrieve from the supplied resource. You must recognize which provision to reach for and map facts onto its operative language.

When no resource is supplied, the same floor supports a short answer: divisible harm is allocated by causal portion; indivisible harm may support joint and several collection; contribution is a defendant’s later reimbursement right; the thin skull rule includes unusually severe harm actually caused; failure to mitigate reduces avoidable additional loss; attorney’s fees are not automatically recoverable; and a statutory cap controls only as its text provides.

Narrow Gates on the Award: Thin Skulls, Avoidable Loss, Fees, and Caps

The thin skull rule applies when the defendant’s conduct actually injures a person whose preexisting condition makes the consequences unusually severe. The defendant takes the claimant as found and is liable for the full extent of harm caused, even if that extent was unforeseeable. The rule does not eliminate causation: the defendant is not liable for an unrelated illness, a later independent injury, or harm that would have occurred without the defendant’s conduct.

The near miss is failure to mitigate. Thin skull concerns the claimant’s condition at the time of the tort; mitigation concerns the claimant’s reasonable conduct after the tort. A claimant need not undergo treatment carrying a material risk of death or serious additional injury merely to reduce damages. But a claimant may not recover avoidable additional loss caused by an unreasonable failure to obtain ordinary treatment, follow medical instructions, seek employment, or otherwise make reasonable efforts. The defendant bears the burden of showing both unreasonable conduct and the amount of loss that reasonable conduct would have avoided. The original injury is not erased.

The American rule generally requires each side to pay its own attorney’s fees incurred in prosecuting or defending the action. Fees become recoverable only if an applicable statute, contract, recognized exception, or supplied rule authorizes them. Common exceptions may include a fee-shifting statute, a contractual fee clause, a common-fund doctrine, or bad-faith conduct, but never assume an exception from the mere fact that the claimant won. “Costs,” litigation expenses, and attorney’s fees are not interchangeable unless the governing text makes them so.

A statutory cap is a separate screen. First identify the cap’s target: physical injury, noneconomic loss, a medical claim, a government defendant, or another specified category. Then identify its unit: per claimant, per occurrence, per defendant, or total award. Finally check exclusions and exceptions. A cap may exclude attorney’s fees, or it may address them separately; do not infer the answer. A cap is not comparative responsibility, mitigation, or joint-and-several liability. Those rules determine what loss is attributable, avoidable, or collectible; the cap then limits the category or amount described by the statute.

Read a supplied provision in three passes: locate operative verbs, mark conditions and exceptions, and map each fact to the exact clause. Consider this provision:

For a single injury caused by two or more negligent actors:

(a) If harm is divisible, the factfinder assigns each portion to the actor whose conduct caused it. Each actor is liable for that portion.

(b) If harm is indivisible, each actor whose negligence was a substantial factor is jointly and severally liable for the entire compensatory loss.

(c) A claimant’s recovery is reduced by the claimant’s percentage of responsibility. A negligent actor who pays more than that actor’s percentage may seek contribution from another liable actor.

(d) A claimant must use reasonable efforts after injury to avoid additional loss. Recovery excludes loss that reasonable efforts would have avoided. No reduction is made for declining medical treatment that carries a material risk of death or serious additional injury.

(e) Fees paid to the claimant’s attorney to prosecute this action are not compensatory damages unless another applicable law provides otherwise.

(f) No award for physical injury may exceed $500,000, excluding attorney’s fees.

Dana suffers an $800,000 physical-injury loss when negligent conduct by Alex and Blair, each a substantial factor, causes one indivisible injury. Dana has osteoporosis, which makes the injury more severe than it would have been for a person with ordinary bones. A physician recommends surgery that carries a material risk of death, so Dana declines it; $150,000 of the total loss would probably have been avoided had Dana undergone the surgery. Dana has no comparative responsibility and incurs $100,000 in attorney’s fees prosecuting the action. No other law authorizes attorney’s fees.

Recurring errors are usually traceable to one misplaced fact:

• Treating Blair’s insolvency as eliminating Alex’s joint liability confuses collection from one defendant with contribution between defendants.

• Reducing Dana’s award because osteoporosis was unforeseeable confuses the thin skull rule with a failure-to-mitigate defense.

• Calling a risky surgery “unreasonable” without applying the material-risk exception ignores the supplied mitigation text.

• Adding attorney’s fees because Dana prevailed ignores the American rule and the requirement of an applicable fee authorization.

• Applying a cap before identifying its category and exclusions can incorrectly cap fees, the wrong claimant, or the wrong kind of loss.

The Final Allocation Run: Three Fact Patterns Under Time Pressure

High-Yield Points - ⚡ Biggest Takeaways

Classify divisible versus indivisible harm before deciding whether collection is several or joint and several. The thin skull rule covers severe harm caused by the claimant’s condition; mitigation addresses unreasonable post-injury choices. Read fee and cap provisions separately: prevailing does not automatically recover fees, and a cap controls only its stated category and exceptions.